NEURO Flashcards
CNS parts
brain and spinal cord
brain responsibility in CNS
receives and processes sensory information, initiates responses, stores memories and generates thoughts and emotions
spinal cord responsibility in CNS
conducts signals to and from the brain, controls reflex activities.
PNS parts
motor neurons and sensory neurons
motor neurons
CNS to muscle glands
sensory neurons
sensory organs to CNS
parts of motor neurons
SNS, ANS
SNS
controls voluntary movements
ANS
controls involuntary responses
parts of ANS
sympathetic and parasympathetic
sympathetic
fight or flight
parasympathetic
rest or digest
sympathetic involvement
- dilates pupils
- inhibits flow of saliva
- accelerates heart beat
- dilates bronchi
- inhibits peristalsis and secretions
- conversion of glycogen to glucose
- secretion of adrenalin, and noradrenalin
- inhibits bladder contraction
parasympathetic involvement
- constricts pupils
- stimulates flow of saliva
- slows heart beat
- constricts bronchi
- stimulates peristalsis and secretions
-stimulates release of bile - contracts bladder
sympathetic alpha and beta receptors: alpha 1
- vasoconstriction
- increase peripheral resistance (blood flow)
- increase BP
- mydriasis
- increased closure bladder sphincter
norepinephrine > epinephrine
sympathetic alpha and beta receptors: alpha 2
- inhibits norepinephrine release
- inhibits acetylcholine release
- inhibits insulin release
epinephrine> norepinephrine
sympathetic alpha and beta receptors: beta 1
- increased hr
- increase lipolysis
- increased myocardial contractility
- increase renin
epinephrine = norepinephrine
sympathetic alpha and beta receptors: beta 2
- vasodilation
- decrease peripheral resistance
- bronchodilator
- increased glycogenolysis
- increased glucagon release
- relaxes uterine smooth muscle
epinephrine >norepinephrine
cranial nerve 1
olfactory; smell; sensory
cranial nerve 2
optic- vision; sensory
cranial nerve 3
oculomotor- eye movement, pupil constriction ; motor
cranial nerve 4
trochlear- eye movements; motor
cranial nerve 5
trigeminal- opthmalic and maxillary, mandibular musculature; sensory and motor
cranial nerve 6
abducens- eye movements; motor
cranial nerve 7
facial- facial expressions, stapedial reflex, hyoid elevation; sensory and motor
cranial nerve 8
vestibulocochlear- balance and hearing; sensory
cranial nerve 9
glossopharyngeal- tongue, pharynx, tonsil. pharyngeal musculature; sensory and motor
cranial nerve 10
vagus- viscera of neck, throat, abducens. larynx, pharynx and soft palate; sensory and motor
cranial nerve 11
spinal accessory- strap muscles of neck; motor
cranial nerve 12
hypoglossal- tongue; motor
